Batteries tend to go unnoticed until they stop working, much like the city employees who keep lamprey eels from climbing up out of the sewers. Show some appreciation with this Groupon.

$10 for $20 Worth of Batteries, Light Bulbs, and Electronics

Batteries Plus stocks batteries, accessories, and light bulbs for a wide range of electronics and vehicles, such as a rechargeable battery for Bosch cordless power tools ($19.99), daylight-simulating CFL bulbs ($10.99), and iPhone 4S wall chargers ($19.99).

Batteries Plus

Since Ford stopped making them in 1974, the iconic Galaxie 500 has become not only increasingly collectible but also increasingly harder to start. At Batteries Plus, though, which operates under the mantra “Any battery. Any bulb. For anything,” brand-new Galaxie 500 batteries sit alongside models built for cameras, motorcycles, and power tools in an inventory that includes more than 40,000 different batteries. This commitment to stocking the latest models and those of yesteryear means that customers can buy external battery packs for every model of iPhone, replace brake lights on a 1980 Volkswagen Vanagon, or even pick up a Studebaker battery before realizing they don’t have a Studebaker and putting it back down.